Bead forming machine



Nov. 21, 1933- w. PARKER BEAD FORMING MACHINE Original Filed April 24, 1930 3 Sheets-Sheet 1 am; 5 m M 20 INVENTOR BY MAL/AM FQ'IEKEF 3'; ATT NEY Nov. 21, 1933- w. PARKER I BEAD FORMING MACHINE Original time April 24, 1930 s Sheets-Sheet 2 W. PARKER BEAD FORMING MACHINE M A TTORNEYS.

Patented ov. 21, 193; f 1,935,988

UNITED STATES PA T OFFICE-i;

, BEAD FORMING MACHINE William, Parker, Oak Park, Ill., assignor to Grigsby-Grunow Company, Chicago, 111., a corporation of Illinois v 7 Application April 24, 1930, Serial No. 446,903

' Renewed November 7,1932 7 14 Claims. (01. 49-21 This invention relates to machines for the are a plurality of heads 5.- Gas firesc6, arepro manufacture of radio apparatus and particularly vided in certainpositions to soften the glass so to the manufacture of beads for use in vacuum that-the Wires may penetratethereirn tubes. In order to support the various electrodes Each head comprises aIsemi-cylihdricalmem- 5 in'the vacuum tube relative to each other, it isber 10, into which a. beadll, is adapted to rest. 0

customary to disposea bead therein composed of This retaining member is supported .by a post;

a glassrod, into which have been sealed a num- 12, which is adapted to slide within. asupportber of wires. These wires may thenbebent and ing journal 13. Supporting journal 13 is pro-- welded as desired. In the manufacture of such vided with extensions '14 and 15, terminating beads, the glass 'rod is heated to render itisoft, in apertured portions 16 and.17. Posts 18 and 5 and is'forced against a number of wires,'suitably 19 supporting the upper portion of the head pass held so that the wires are sealed into the glass. through apertured portions 16 and '17 and serve A machine-for making this consists "of a turret to maintain journal portion 13in desired posia which intermittently revolves or indexes from tions; The lower portion .of=journalv 13, is pro.

one position toanother. Upon 'this'turret are vided with a shoulder 20', toprevent: upward 7 mounted a plurality of heads, each one'carrying travel; the mechanism for making a head. The head as Surrounding post 12, below shoulder! 20, is ,a a rule consists of a bead retaining member which coil spring 22, between shoulder 20. and a: is adapted to be moved up and down by a cam..' collar 23, rigidly fastened to post 12. Post 20 Above this member is a bead wire pocket, which 12 terminates in a reduced portion 24, :which 75 has usually consisted of a block, having suitably cooperates with a cam surface 25..- It is evi' spaced apertures for the reception of the bead dent that portion 24 will be forced upwardly wires. A cover-is provided to maintain the wires by cam 25, to force post 12, and bed '10, u 1 when the glass'is forced ag'ainst them; u wardly againsttlie compression of spring 22.

25 To'obtain perfect'beads it is essential that the Suitable means may be provided for'preven'ting 50 wires-fitsnug'ly in the pocket. In case the bed 10 from turning'during its travel. pocket becomes filled with dirt'it is evident that Posts. 18 and 19, at, their top ends, carry a loading will-become difficult and result in numerstructure 30, in one portion of which is mounted ous-bent wires. Unloading in such a case will a wire' pocket .31.-This pocket consists of two also're sult in bent'wires and unsatisfactory beads. blocks 32" and 33, each block .provid'ed'with a 35 An object ofmy invention is to devise a head 1 plurality of semi-circular indentations, which which may beeasily loaded and unloaded and when fitted. together,- as shown in Figure 4, which will function in an efiicient manner. A. form apertures' 34. Blo'ck33 is rigidly fastened further object, is the provision of automatic. to supporting member 30, by anysuitable means,

35 means' on the machine which will render the head Block 32 is embraced between two shoulders 35 easy to load at a pre-determined index position," and 36 of block 33,:andis-pressed against block and then maintainthe head in normal condition 33 by springs 37. o x.- during the remainder of the cycle, In- .orderto separate "blocks 32-and 33 and Referring to the'drawingsz' thus enlarge apertures 34' to facilitate loading.

40'. Figure '1 is a plan view looking down upon as of wires 40, there areprovided a plurality of bead forming machine. v parallel-pins 41, passing through suitable aper- Figure 2 is. a similar view looking down upon tures in member 30 and block 33 and bearingone of the heads. i against block 32. lt is evident that blocks 32 Figure'3 isa view similar to Figure 2, showing and- 33, may be separated against the tendency the head in open-positiomofsprings 37 by pressure on pins-41. This pres Figure-'4 is a view looking down upon the hea sure is obta'inedby the provision of a rectanguwith certain parts broken'away. f lar rock shaft 43, mounted at its ends by thread- Figllre 5 is a detail ofa bead. he edmembers 44. A 'projection-46, through which Figure 6 is anelevation ofthe head-showing passes an adjustable stop 47, is provided for 50 the cam and beadretaining member. rock shaft 43.--A- cover 50' provided withahan- Referringto Figure 1, the bead forming madle 51, is'pivoted on post 19, and carries an ex-' chine comprises a turret or an intermittently retension 52 for cooperation for stop 47.

I volving table 1 having a suitable intermittent As shown in Figure 3, upon the opening of mechanism 2, for the operation thereof. Mountcover 50, extension 52 engages stop 47, and

55 ed at spacedintervals along the periphery of 1 rocks shaft 43. By virtue of the rectangular I cross-section of rock shaft 43, pins 41, are forced inwardly, thus opening wire pocket 31.

In order to open cover 50 automatically upon the completion of a bead, a pin 55 is provided on 5 handle 50, and is adapted to cooperate with a 55.; automatic means for operating said cover and cam block 56, suitably mounted. It is evident from Figure 1, that upon the rotation of turret 1, the head adjacent block 56, will have its cover opened by the inneraction of pin and block 56. During the time that the block is opened the entire bead may be removed and materials for a new bead may be loaded into the head. An arm 57 may be provided to cooperate with pin 55, to automatically close the cover 'upon loading of the head.

The general application of a split Wire pocket for machines of this general character is disclosed and claimed in a copending application of mine, Serial No. 446,903 filed April 24, 1930.

I claim:

1. In a bead forming machine, a head comprising a split, bead Wire pocket, a cover for said pocket and means for opening said pocket upon removal of the cover therefrom.

, 2. In a bead forming machine, a bead wire pocket comprising two split blocks, a cover for said pocket, andmeans associated with said cover whereby said blocks are automatically opened when said cover is operated.

3. In a bead forming machine, a head comprising a bead retaining member, a bead Wire pocket disposed above said member, said pocket comprising a plurality of members fitting together to form retaining apertures for. said bead 'jwires, a cover oversaid bead wire pocket, and

means cooperating with said cover for enlarging.

said bead wire apertures in said pocket upon 'movement. of said cover.

4. In a bead forming machine, a head comprising a bead retaining member, a bead Wire pocket disposed above saidmember, said pocketconsisting of a plurality of members adapted to fit together and form bead wire apertures, spring means for maintaining said pocket forming mem- ,bers in position, a cover disposed over said pocket,

and means cooperating with said cover for separating said pocket forming members. i

5. A bead forming machine comprising a turret adapted to index from one position to another, a .1; plurality of heads mounted thereon, each head comprising a bead retaining member, a' plurality of members above said bead retaining member adapted to form a bead Wire pocket when pressed together, a .cover. disposed above said pocket, and

pocket in predetermined index positions whereby said cover and pocket remain open during a predetermined time interval for the insertion of bead wires. 7

a 6. A bead forming machine comprising a turret adapted to index from one position toanother,

a plurality of heads on said turret, each head comprising a bead retaining member, a bead wire pocket composed of two split blocks, a rock shaft,

comprising a bead retaining member, a plurality of interfitting blocks forming a bead wire pocket, a cover for said pocket, and means for separating said blocks upon predetermined movement of said cover.

8. A bead forming machine comprising a turret adapted to index from one position to another, headsmounted thereon, each head comprising a bead retaining member, a plurality of in'terfitting blocks forming a bead wire pocket, a cover for said pocket, a rocking member, and means coopcrating with said cover and said member for automatically opening said pocket at predetermined index. positions.

9. A bead forming machine comprising a turret adapted to index from one position to another, a plurality of heads mounted thereon, each head comprising a bead retaining member, a plurality of interfitting blocks forming a bead wire pocket, a cover for said pocket, means for normally maintaining said blocks together, and means for opening said block upon movement of said'cover.

10. In a bead forming machine, a head comprising a bead retaining member, a split. block bead wire pocket, a removable cover for said pocket, a rock shaft, spring means normally tending to keep said split blocks together, andmeans cooperating with said rock shaft for separatingv said split blocks upon movement of said cover.

. 11. In a bead forming machine, ahead comprising a bead retaining member, a split block.

12. In a bead forming machine, a head comprising a bead retaining member, a plurality of blocks forming a bead wire pocket, a removable cover therefor, a rock shaft, means on said cover for actuating said rock shaft upon movement of said cover, and means for separating said blocks upon movement of said rock shaft.

13.. In a bead forming machine, a split wire pocket, a cover for said pocket, means operated by said cover for opening said pocket when said cover is turned away from said pocket and for closing said pocket when said cover is over saidpocket, and a glass bead retainingmember disposed .below said pocketand in line with said wires, said member and pocket being adapted to be moved relatively to each other for forming a bead.

1 til 14. A glass working machine for securing metal and glass parts together comprising anintermittently rotatable support, mounted on said support for holding a glass rod,

a work holder 7 means positioned adjacent the'path of travel of said work holder for heating the glass rod carried thereby, a frame mounted on said workv holder and movable relative thereto, a wire guide block carried by said frame, said frame and wire guide block having cooperating semi-cylindrical grooves therein for positioning a wire in juxta-position with and extending at right angles to said glass.v

rod, a cam, and an actuating rod connected. to said frame and cooperating with said cam to move said frame relative to said work holder during the rotary movement of the support, to eifect the pressing of the wire at right angles into said glass upon the heating of the latter.

WILLIAM PARKER. 9 

